Carrier XtendFRESH Manual

Cauon: Check that the unit circuit breaker and start-
stop switch are in the OFF (“0”) posion before con-
necng to any electrical power source.
1. Check power source for proper voltage.
2. Connect the refrigeraon unit power plug and turn
the main power ON.
3. Turn the refrigeraon unit circuit breaker ON (“1”).
4. Start the refrigeraon unit by turning the start stop
(ST) to ON (posion (“1”).
Notes: Turn the start-stop (ST) switch OFF (posion “0”)
to stop the unit, also turn the unit circuit breaker OFF.
Recommend the latest operaonal soware be installed
in the unit prior to troubleshoong.
Potenal hazardous atmosphere and low oxygen levels
inside the container, venlate before entering. Stay away
from doors while venng.
Refer to T-366 XtendFRESH Manual for a complete list
Operation of XtendFRESHTM
Starng the Refrigeraon Unit
Once the refrigeraon unit is oper-
ang, XtendFRESH operaon is
available through the system key
pad located on the right side of the
unit and the display module will
show state.
Setup XtendFRESH Operaon
and View CO2 and O2 Setpoints
View XtendFRESH CO2 and O2
Values Inside Container
Other opons available under Cd 43:
The XtendFRESH™ atmosphere control system is a
modular opon that oers enhanced funconality
to help slow the ripening process of perishable
cargo by removing ethylene and simultaneously
controlling CO2 and O2 levels in mulple combina-
ons. This enables the fresh transport of perisha-
bles on longer voyages. The system’s ability to
control the container atmosphere is performed
with the use of a CO2 and ethylene scrubber. In
this arcle, we will review the key features and
operaon of the system.
Operation of Keypad / Display
1. Press the “CODE SELECT” key on the key pad.
2. Press the “UP” or “DOWN” arrow keys unl “Cd 43”
is in the le display, then press “ENTER”.
3. Press the “UP” or “DOWN” arrow keys to access the
“FrESh” mode, then press “ENTER” to access sub
menu parameters.
4. With “CO2SP” in the le display, use the “UP” or
“DOWN” arrow keys to select the CO2 setpoint.
Then, press “ENTER”.
5. With “O2 SP” in the le display, use the “UP” or
“DOWN” arrow keys to select the O2 setpoint. Then,
press “ENTER”.
“OFF” mode will disable all XtendFRESH operaons. The
XtendFRESH vents will be closed and the scrubber will re-
main o. This will be the default mode anyme a frozen
mode of operaon is selected. Whenever a frozen setpoint
is selected, the current XtendFRESH seng will be saved.
“tEST” mode allows the operator to test system opera-
on of the mechanical components.
1. Press the “CODE SELECT” key on the key pad.
2. Press the “UP” or “DOWN” arrow keys unl “Cd 44” is
in the le display, then press “ENTER”. Code 44 allows
the user to view the CO2 and O2 concentraon values.
3. Press the “DOWN” arrow key to toggle between the
dierent values available in this sub menu.
CO2 Setpoint
CO2 %
O2 Setpoint
O2 %
O2 Voltage
XtendFRESH™
62-12065
Global Technical Support: 800-668-6283
XtendFRESH™
Operators Guide

AL07 MANUAL FRESH AIR VENT (FAV) OPEN
Cause For units equipped with XtendFRESH and a Vent Posion Sensor, the controller will monitor the manual fresh air opening at a pre-determined
me. If during this me the fresh air vent is open and XtendFRESH is acve, an alarm will be generated. If alarm is acve, the controller monitors
the manual fresh air once per hour. Upon clearing the alarm, the controller goes back to monitoring at the pre-determined me.
Component Vent Posion Sensor (VPS)
Troubleshoong Manually reposion vent to 0% and conrm using Cd45. If Cd45 is not reading 0%, perform a calibraon of the panel.
If unable to obtain zero reading, replace defecve VPS.
If unit is loaded, ensure vent is closed. Note and replace VPS on next PTI. The alarm will not aect the XtendFRESH system from operang.
AL09 O2 SENSOR FAILURE
Cause Triggered anyme the O2 sensor reading is outside of the normal operaon range, aer an inial signal was detected.
Component O2 Sensor, O2 Amplier, Sensor Switch Module (if equipped)
Troubleshoong Check Cd44 and scroll down to 02V. The O2 sensor output will be displayed in millivolts (130mV to 4100mV).
Switch equipped: If voltage is not present at Cd44 and a sensor switch module is installed, check for O2 voltage on black wire connected to the
sensor switch module, connecng ground of meter to TP9. If the voltage is in the 130mV to 4.1V range, directly wire black wire to KD04. This
may cause an AL07 depending on O2 reading but XtendFRESH will operate normally. If no voltage on black wire, proceed to next step.
Check wiring (refer to schemac), and correct if found mis-wired.
If O2 sensor is available, remove upper fresh air panel and evaporator motor and replace sensor. If aer replacing sensor AL09 connues, replace
amplier.
If parts are not available, turn XtendFRESH opon o (Cd43) and open the Manual Fresh Air Vent.
AL10 CO2 SENSOR FAILURE
Cause Triggered anyme the CO2 sensor reading is outside of the normal operaon range, aer an inial signal was detected.
Component CO2 Sensor
Troubleshoong Check the voltage at MC5 to ground pin on TP9. (1 - 4.7 vdc)
Check wiring (refer to schemac), and correct if found mis-wired.
If part is available, remove upper fresh air panel and evaporator motor; replace sensor.
If no part is available, take no acon and service at next PTI. XtendFRESH will connuously run the scrubber. O2 level will be controlled with the
opening and closing of the fresh air vents as required.
AL29 LOSS OF ATMOSPHERIC CONTROL
Cause Triggered whenever the CO2 level is above its upper limit by 1% for 60 minutes. Or, when O2 level is greater than 1% below its set point for longer
than 5 minutes aer the unit has been in range. The alarm is triggered o when the levels return to within the normal range.
Setup Run Cd43 test mode for troubleshoong the below components. If test mode mes out, you must restart the mode prior to the connuaon of
tesng.
Troubleshoong If components do not energize, check FX1 and FX2 for power (460 VAC). If fuse is open, check heater connuity (XHT1 to ground). Must be
greater than 1 mega ohm. If less than 1, disconnect the heater at XHT1 and XHT2. Replace fuse. Unit will control on fresh air solenoids.
Component Solenoid Air Vents - Visually inspect to see if the Solenoid Valves are opening air vents.
Troubleshoong If vents open, troubleshoot the next component. If vents do not open, connue with troubleshoong below.
Check FX4 fuse for power (~20 volts dc).
If fuse is open, check wiring and or replace solenoid if part is available.
If no part is available, open manual fresh air vent.
Component XtendFRESH Fan(s) / XtendFRESH Scrubber Motor - Visually inspect to see if the XtendFRESH Fan(s) are running (air blowing on le, intake on
right), check current draw of motor at the XST1 (~ 40 to 200 milliamps / contactor load side). Troubleshoot the non-operang component.
Troubleshoong If both are running, proceed to next component.
Verify XS contactor is pulling in. If not, check FX6 fuse for power (24 VAC). If not, check power at controller KB4.
Check FX3 fuse for power (~20 vdc). If no power, replace fuse. If fuse opens a second me, take no further acon. O2 level will be controlled
with the opening and closing of the fresh air vents.
If part is available, replace either fan or scrubber motor. Fan is replaceable from the front on a loaded unit; Scrubber motor is not.
If no part is available or accessible, take no acon and service at next PTI. O2 level will be controlled with the opening and closing of the fresh air
vents.
Component Heater
Troubleshoong Verify XH contactor is pulling in. If not, Check FX6 for power (24 VAC). If open ohm contactors XHA1 and XSA1 to ground. Replace (12 Amp)
contactor. If contactor is pulling, power unit o and check heater resistance from XH1to XH2 (450 to 500 ohms). If heater is outside of the range,
disconnect heater at XHT1 and XHT2 and replace at next PTI. Unit will control on fresh air solenoids.
AL62 O2 OUT OF RANGE
Cause This is a nocaon alarm and does not pose a risk to fresh produce. AL62 is triggered when there is an indicaon that the O2 level is rising aer
reaching its setpoint (+ 1%). If O2 level exceeds 4% above setpoint, the alarm is acvated. The alarm does not acvate if the unit was pre-tripped or
trip started between last reaching its O2 setpoint and exceeding the plus 4%, or if power has been turned o for eight hours. The alarm is deac-
vated if O2 drops below setpoint (+ 1%) or if a pre-trip or trip start is performed.
Component Scrubber Failure
Troubleshoong Refer to AL29 Scrubber component above.
Component XtendFRESH Solenoid Valves
Troubleshoong Refer to AL29 Solenoid Air Vent component above.
Component Container Air Tightness
Troubleshoong Seal container where possible (access panels, rear doors, mounng hardware, etc).
AL96 SCRUBBER ROTATION FAILURE - OPTIONAL FEATURE
Cause Feedback from the Scrubber Motor to the controller not detected
Component Scrubber Motor
Troubleshoong Run Test Mode and verify scrubber bed is turning. If back panel cannot be removed to check verify the scrubber amperage consumpon, read at
XS contactor wire XSL1. If between 40 and 200mA motor rotang properly. If NO current detected check and replace FX3. If current spiking to
350mAps for 2 seconds then dropping to 90mAmps the scrubber motor is located. If scrubber motor is locked further inspecon of the scrubber
bed is required. Unit will control CO2 with the fresh air solenoid when this alarm occurs if scrubber inaccessible.
Component Ground Interface Module (GIM)
Troubleshoong Once it has been veried that the scrubber motor is rotang check the wiring connecons to the GIM module. If all wires secured properly re-
place the GIM module if one is available. If not the unit will control CO2 using the fresh air solenoids.
XtendFRESH Troubleshoong
The XtendFRESHTM Controlled Atmosphere opon alarms are AL07, AL09, AL10, AL29, AL62 and AL96.
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